Mr Whittaker, prior to editing The Daily Telegraph was editor of The Australian from 2007-2011.

Mr Mitchell will retire on December 11.

News Corp executive chairman of Australasia Michael Miller said Mr Whittaker's credentials will be valued at The Australian.

"His previous experience on The Australia as editor, deputy editor and national chief of staff will ensure the paper maintains the momentum and journalistic excellence driven by Chris Mitchell," Mr Miller said.

Mr Whittaker said he was honoured to take on the new role.

"Chris steps down with the paper in a strong position and he can take great credit for its unique position in the Australian media landscape. I am determined to ensure the quality of the journalism continues to be outstanding in all its forms," Mr Whittaker said.

Replacing Mr Whittaker at The Daily Telegraph will be The Courier Mail's editor Chris Dore. A replacement for Mr Dore will be announced in the coming weeks.